1996 GMC SIERRA automatic transmission

If No Steam Is Coming From Your Engine
If you get the overheat warning but see or hear no
steam, the problem may
not be too serious. Sometimes
the engine can get
a little too hot when you:
Climb a long hill on a hot day.
0 Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer. See “Driving on Grades” in the Index.
If you get the overheat warning with no sign of steam,
try
this for a minute or so:
I. If you have an air conditioner, turn it off.
2. Turn on your heater to full hot at the highest fan
speed and open the window
as necessary.
3. If you’re in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- AUTOMATIC OVERDRIVE (0)
or THIRD (3) for automatic transmissions.
If you no longer have the overheat warning, you can drive.
Just to be safe, drive slower
for about 10 minutes. If the
warning doesn’t come back
on, you can drive normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there’s still
no sign of steam, push the accelerator
until the engine speed is about twice as fast as normal
idle speed. Bring the engine speed back
to normal idle
speed after two or three minutes. Now see
if the warning
stops.
But then, if you still have the warning, turn of
the engine nrzd get everyone nut of the vehicle until it
cools down.
You
may decide not to lift the hood but to get service
help right away.
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Changing a Flat Tire
If a tire goes flat, avoid further tire and wheel damage
by driving slowly to a level place. Turn on your hazard
warning
flashers.
Changing a tire can cause an injury. The vehicle
can slip
off the jack and roll over you or other
people.
You and they could be badly injured.
Find a level place to change your tire.
To help
prevent the vehicle from moving:
1. Set the parking brake firmly.
2. Put an automatic transmission shift lever in
PARK (P) or shift a manual transmission to
FIRST (1) or REVERSE: (K).
3. If you have a four-wheel-drive vehicle,
be sure the transfer case is
in a drive
gear
-- not in NEUTRAL (N).
4. Turn off the engine.
CAUTION: (Continued)
To be even more certain the vehicle won't move,
you can put blocks at the front and rear of the
tire farthest away from the one being changed.
That would be the tire on the other side of the
vehicle, at the opposite end.
The following
steps will tell you how to use the jack and
change a tire.
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A. Battery
B. Air Cleaner
C. Radiator Cap
D. Coolant Recovery Tmk
E. Air Filter Restriction Indicator
E Engine Oil Dipstick
G. Automatic Transmission Dipstick
H. Fan
I. Power Steering Fluid Reservoir
J. Engine Oil Fill
K. Brake Fluid Reservoir
L. Windshield Washer Fluid Reservoir
M. FuseIRelay Center
N. Storage Compartment
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“VORTEC” 7400 Engine
I
A. Battery
B. Coolant Recovery Tank
C. Air Cleaner
D. Radiator Cap
E. Air Filter Restriction Indicator
E Engine Oil Dipstick K. Brake Fluid Reservoir
G. Automatic Transmission Dipstick L. Storage Compartment
H. Engine Oil Fill M. Windshield Washer
I. Fan Fluid
Reservoir
J. Power Steering Fluid Reservoir Ne Fuse/RelaY Center
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Automatic Transmission Fluid
When to Check a1 C’ -ge
A good time to check your auromarlc transmission fluid
level
is when the engine oil is changed.
Change both the fluid and filter every
50,000 miles
(83 000 km) if the vehicle’s GVWR is over 8,600 or
if the vehicle is mainly driven under one or more of
these conditions:
In heavy city traffic where the outside temperature
regularly reaches
90°F (32°C) or higher.
0 In hilly or mountainous terrain.
0 When doing frequent trailer towing.
Uses such as found in taxi, police or delivery service.
If your vehicle’s GVWR is not over 8,600 and you do
not use your vehicle under any of these conditions, the
fluid and filter
do not require changing.
See “Scheduled Maintenance Services’’
in the Index.
How to Check
Because this operation can be a little difficult, you
may choose to have this done at your GM dealership
Service Department. If
you do it yourself,
be sure to follow all the instructions
here, or
you could get a false reading on the dipstick.
NOTICE:
Too much or too little fluid can damage your
transmission.
Too much can mean that some of
i the fluid could come out and fall on hot engine
~ parts or exhaust system parts, starting a fire. Be
sure to get an accurate reading if you check your
transmission fluid.
Wait at least 30 minutes before checking the
transmission fluid level
if you have been driving:
When outside temperatures are above 90°F (32°C).
0 At high speed for quite a while.
In heavy traffic -- especially in hot weather.
While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which
is 180°F to 200°F (82°C
to 93°C).
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How to Add Fluid
3. Check both sides of the dipstick, and read the lower
level. The fluid
level must be in the COLD area for a
cold check or
in the HOT area or cross-hatched area
for a hot check.
4. If the fluid level is in the acceptable range, push the
dipstick back
in all the way; then flip the handle
down
to lock the dipstick in place. Refer
to the Maintenance Schedule
to determine what
kind
of transmission fluid to use. See “Recommended
Fluids and Lubricants’’
in the Index.
Add fluid
only after checking the transmission fluid
HOT. (A COLD check is used only as a reference.) If
the fluid level is low, add only enough of the proper
fluid
to bring the level up to the HOT area for a hot
check. It doesn’t take much fluid, generally less than a
pint
(-0.5 L). Don’t overjill. We recommend you use only
fluid labeled DEXRON@-111, because fluid with that
label is made especially for your automatic transmission.
Damage caused by fluid other than DEXRON-I11 is
not
covered by your new vehicle warranty.
0 After adding fluid, recheck the fluid level as
described under “How to Check.”
0 When the correct fluid level is obtained, push the
dipstick back in all the way; then flip the handle
down to lock
the dipstick in place.
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Fuse Usage
15 DRL Relay, Fog Lamp Relay
Underhood Fusemelay Center
16
17
18
19
20
21
22
23 24 Front and Rear Turn
Signals, Back-up
Lamps, BTSI Solenoid
Radio (Ignition)
4WALNCM, ABS, Cruise Control
Radio (Battery)
PRNDL, Automatic Transmission,
Speedometer, Check Gages Warning Light
Not Used
Not Used
Not Used
Front Axle, 4WD Indicator Lamp, TP2 Relay
(Gasoline Engine)
A Power Door Lock, Six-Way Power Seat,
Keyless Entry Module
B Power Windows The underhood
fusehelay center is located in the rear
of
the engine compartment near the brake fluid reservoir.
Move the retainer clips for the cover to access the fuse
block.
You can remove fuses with a fuse extractor. The fuse
extractor
is mounted to the interior fuse block. To
remove fuses if
you don’t have a fuse extractor, hold the
end of the fuse between your thumb and index finger
and
pull straight out.
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Maintenance Schedule
I Short Trip/City Definition -- Gasoline Engines . I ~
Follow the Short Trip/City Maintenance Schedule if any
one of these conditions is true for your vehicle:
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
driving in stop-and-go traffic).
off-road frequently.
0 Most trips include extensive idling (such as frequent
0 You operate your vehicle in dusty areas or
You frequently tow a trailer.
If the vehicle is used for delivery service, police, taxi
One of the reasons you should follow this schedule if you
operate your vehicle under any of these conditions is that
these conditions cause engine oil to break down soonez
or other commercial application.
I Short Trip/City Intervals -- Gasoline Engines I
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change
(or 3 months, whichever occurs first). Chassis
Lubrication (or
3 months, whichever occurs first). Drive
Axle Service (or
3 months, whichever occurs first).
At 6,000 Miles (10 000 km) -- Then Every
12,000 Miles (20
000 km): 'Tire Rotation.
Every 15,000 Miles (25 000 km): Shields and
Underhood Insulation Inspection
(GVWR above
8,500 lbs. only). Thermostatically Controlled Engine
Cooling Fan Check (or every
12 months, whichever
occurs first). Front Wheel Bearing Repack
(2WD only)
(or at each brake relining, whichever occurs first).
Every 30,000 Miles (50 000 km): Fuel Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (vehicles over
8600 GVWR or
driven under severe conditions only).
Evwy 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel Tank, Cap and Lines
Inspection. Exhaust Gas Recirculation System
Inspection. Evaporative Control System Inspection.
Every 100,000 Miles (166 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Spark Plug Wire Inspection. Spark Plug Replacement.
Positive Crankcase Ventilation
(PCV) Valve Inspection.
These intervals only summarize maintenance services.
Be sure to follow the complete maintenance schedule
on
the following pages.
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